baber/WOPTO huggingface dataset:
Patent GB-473268-A (GB)
Title: Improvements in or relating to sound-film reproducing apparatus
IPC: B21K5/06
Filed: 1936-02-04
Abstract: 473,268. Optical sound - reproducing apparatus. ARNDT, M. Feb. 4, 1936, Nos. 3293 and 3295. Convention dates, March 18, 1935 and June 27, 1935. [Class 40 (ii)] [Also in Group XL] Relates to apparatus for reproducing sounds from films or strip record carriers bearing a number of parallel sound records in which a lamellar barrier layer cell is provided behind each record, the surface of each cell being disposed at right angles to the surface of the film with its edge normal to the direction of movement of the film and the boundary surface of the counter electrode and the cuprous oxide or semi-conductive layer of the cell being illuminated by light directed upon it from the far side of the film or record carrier. According to the invention, the illumination of the film or record carrier, which illumination may take the form of an extended band of light or a large spot of light, extends over all the cells and their counter electrodes simultaneously and a switch, preferably of the rotary type, is provided which connects to the amplifier only the particular cell corresponding to the sound record that is required to be reproduced. The transfer from one sound record to the next is preferably effected mechanically or electrically in an automatic manner and during such transfer there may be simultaneously a reversal of the direction of movement of the film or record carrier. The cells may be arranged in alignment and in the same plane or stepwise and in different planes. Specification 286,768, [Class 40 (ii)], is referred to. The Specification as open to inspection under Sect. 91 comprises also an arrangement in which the counter electrode, which is preferably smaller than the cell electrode, extends up to or even beyond the edge of the cell electrode and in which the point of convergence of the impinging light is made to fall a short distance in front of or in the record carrier. In order to avoid unpleasant crackling, if switching over from one cell to the next is effected by hand, the transitions between the several positions of the switch can be bridged by resistances and condensers. The layer of metallic oxide in the cell is preferably made very thin and has a maximum thickness of from 0À2 to 0À3 mm. The reduction of this layer to the desired thickness is preferably effected by chemical means, such as by etching with potassium cyanide or acids. The efficiency of the cell may be improved by applying an adjustable auxiliary voltage thereto. This subject-matter does not appear in the Specification as accepted.
Patent GB-524428-A (GB)
Title: Improvements in or relating to hanging devices
IPC: A47C7/64
Filed: 1939-01-31
Abstract: 524,428.. Hooks. BURGESS, D. Jan. 31, 1939, No. 3305. [Class 89 (ii)] A peg for supporting light articles such as hats, hand bags &c. and adapted to be secured to the back of a chair &c. is so mounted on its support that slight lateral or upward pressure moves it from operative position to a position substantially parallel to or flush with the supporting surface. A member 1, Fig. 2, has a slot 4 in a cylindrical face communicating with a radial slot 5 in the top face 3. The peg 8 is pivoted to a block 9 itself pivoted to a projection 10 the two pivots being at right angles. The block 9 is provided with flats engaged by a leaf spring 11 to hold the peg lightly either in the operative position shown in full lines, a notch in the bottom edge of the slot 4 assisting, or in one or other of the positions shown in Fig. 2 in chain lines, or vertically upwards in the slot 5. A resilient finger 12 may engage the brim of the hat. In a modification the peg is pivoted in a longitudinally slotted cylinder rotated in an outer cylinder having a curved slot. In a further arrangement the peg projects from the ball of a ball and socket joint.
Patent GB-1430583-A (GB)
Title: Preparation of fluorinated organic materials
IPC: C07D307/10
Filed: 1972-01-24
Abstract: 1430583 Fluorinated organic compounds R N HASZELDINE and R ROWLAND 5 April 1973 [24 Jan 1972] 3328/72 Heading C2C [Also in Divisions C3 and D1] Hexafluoropropene is inserted into a bond between hydrogen and aliphatic carbon in an organic material that is free of acetylenic or terminal olefinic unsaturation, by contacting the hexafluoropropene with the organic compound while exposed to ultra-violet light, in the absence of free oxygen containing gases and free-radical producing catalysts. The organic compound may be a hydrocarbon, or may contain one or more groups or substituents stable under the conditions of the reaction selected from amide, carboxyl, ester, hydroxy, cyanide, ether, thioether, aldehyde, ketones and halogen. It may be a maoromolecule (see Division C3). A solvent may be present. Only one C 3 F 6  unit is inserted into the single C-H bond, but, although single insertion predominates, more than one unit may be inserted into a molecule depending on the nature of the molecule, reactant ratios and conditions. As the net result of the insertion, H is replaced by -CF 2 CFHCF 3  or -CF(CF 3 )(CF 2 H). Many of the products are liquids with low freezing point and good chemical and thermal stability and make useful dielectric liquids, non-corrosive heat exchange materials, solvents and lubricants; products obtained from carboxylic acid have surface active properties; products from alkanes may be dehydrofluorinated to give fluorinated olefins or dienes; products from alkanols may be reacted with acrylic acid to give polymerizable fluoroalkyl acrylates. Insertion into an already fluorinated reactant gives products that are potential aerosol propellants, refrigerants, anaesthetics and intermediates for the preparation of fluoropolymers.
Patent GB-834286-A (GB)
Title: Improvements in polyester resin compositions
IPC: C08K5/098
Filed: 1957-01-31
Abstract: The storage life of a copolymerizable mixture of an unsaturated alkyd resin and an ethylenic monomer copolymerizable therewith, which mixture contains an inhibitor against premature gelation is improved by adding thereto, a copper compound soluble in the alkyd resin mixture in an amount ranging from 0.25 to 10 parts per million, based on the weight of the resinous mixture.  In the examples, soluble copper compounds, e.g. copper naphthenate, acetate, laurate, stearate, ethylene diamine triacetate, citrate, benzoate, salicylate, 3-phenyl salicylate, 8-hydroxy quinolate and benzene sulphonate are added to mixtures of styrene and alkyds made from maleic anhydride, phthalic anhydride and propylene glycol, maleic anhydride and diethylene glycol, maleic anhydride, phthalic anhydride, dicyclopentadiene and ethylene glycol and maleic anhydride, tetrachlorophthalic anhydride and ethylene glycol containing as pregelation inhibitors hydroquinone, t-butyl catechol, 4-ethyl catechol, 3-phenyl catechol, 3-isobutyl catechol, tetrachloroquinone, toluquinone, benzyl trimethyl ammonium chloride, benzyl triethyl ammonium chloride, tributylamine hydrochloride, N,N-di-b -naphthyl p-phenylene diamine, N,N1-diphenyl-p-phenylene diamine, p - hydroxy diphenylamine, p - methyl - p1 - sulphonamido-diphenylamine, benzyl triphenylphosphonium chloride, methyl triphenyl arsonium chloride, carboxy methyl triphenyl arsonium chloride, tetraphenyl arsonium chloride, methyl triphenyl arsonium chloride and tricresyl phosphate. Specifications 497,175, 834,287 and U.S.A. Specifications 2,593,787 and 2,646,416 are referred to.
Patent GB-123531-A (GB)
Title: Improvements in and relating to Photographic Enlarging and Reducing Apparatus.
Inventor: MUELLER KARL
IPC: G03B27/36
Filed: 1919-02-12
Abstract: 123,531. Muller, K., and Ganz, E. Feb. 13, 1918, [Convention date]. Curve - describing instruments. - Relates to photographic enlarging and reducing apparatus in which the focus is automatically maintained for different ratios of reproduction and based as diagrammatically shown in Fig. 1 on the fact that the formula 1/g + 1/b = 1/f can be written (g-f) (b-f) = f<2>, where g is the distance between the copy 46 and the lens 44, b the distance between the lens 44 and the focal plane 45 and f is the focal length of the lens. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a mechanism for tracing an hyperbola. A straight steering-lever 32, Fig. 1 (Cancelled), is used in conjunction with three joints. One joint 26 is a fixed fulcrum for the lever and comprises a pivoting sleeve for the lever 32. The second joint 51 also has a pivoting sleeve and is movable horizontally. The third pivot joint 21 moves horizontally with a joint 51 and is also constrained to move transversely, thereby tracing an hyperbola. The mechanism shown also allows the eccentricity of the curve and the angle of the asymptotes to be varied. The sleeve 25 carrying the pivot joint 51 is adjustable on a lever 24 which itself pivots on a sleeve carried by a rod 13. The lever 24 is also connected by a shotted link-work 28 with the rod 29 carrying the track for the pivot joint 21. The rod 29 carries a dial plate 16 pivotally mounted on the rod 13 and is mounted at the other end in a sleeve 18 which itself is pivotally mounted on a slider 19. The rod 13 and slider 19 run on tracks 4, 5, which themselves are adjustable on transverse tracks 3. The movement of the parts 13, 19, 21 are assisted by cords and weights 35, 38, 41. This subject-matter does not appear in the Specification as accepted.
Patent GB-345412-A (GB)
Title: Improvements in umbrellas
IPC: A45B25/12
Filed: 1930-02-03
Abstract: 345,412. Umbrella handle and tipcup. COOPER, D. S., 11, Aldermanbury Avenue, London. Feb. 3, 1930, No. 3584. [Class 134.] In umbrella hancles hollowed for the reception of the upper end of an ordinary round stick, that part of the handle upon which a tip-cup T slides is reduced in diameter as at C so as to form a stop in the form of a shoulder D limiting the outward movement of the tipcup, and the inner or lower end of the reduced portion of the handle is fitted with an annular rim E to limit inward movement. The tipcup is formed with a rim A at its outer end, and is plain at the other end.
Patent GB-1163453-A (GB)
Title: Apparatus for Controlling the Position of Transverse Perforated Folding Lines in Webs in Printing Presses or Paper-Processing Machines
IPC: B26D1/24
Filed: 1967-01-24
Abstract: 1,163,453. Feeding webs; folding paper. MASCHINENFABRIK GOEBEL G.m.b.H. 24 Jan., 1967 [2 Feb., 1966], No. 3597/67. Heading B8R. In a printing or paper processing machine having apparatus for transversely perforating a web 1 at intervals particularly for depositing the web in a zig-zag pile, an oscillating roller 22 acts upon the web immediately in front of the perforating blades 2, 3, the amplitude of oscillation being adjustable so that the web is deflected a sufficient amount to effect equal spacing of the perforated lines. As shown, a fixed perforating blade 2 coacts with a rotary blade 3 and the roller 22 is used to correct unequal spacing of the lines of perforations which may occur due to irregularities in the machine gearing. The roller 22 is carried by an arm 20 pivoted at 19 and oscillated by links 17, 18 and an eccentric pin 16 on a disc 12 driven by a chain-and-sprocket drive 13, 14, 15 from the knife shaft 4. The shaft of the disc 12 is carried by a plate 6 pivoted on the shaft 4 and adjustable by means of a lever 11 having a pin 7 engaging a slot in the plate. Movement of the lever 11 alters the amount the web 1 is deflected by the roller. Such adjustment could, however, be effected by radial adjustment of the pin 16 or adjustment of the length of the arms of the linkage 17, 18, 20. As shown, the disc 12 makes one revolution for each two revolutions of the blade 3 and two rollers 22, 23 one at each side of the web are provided, the arrangement being such that when the adjusting lever 11 is in a middle position, neither of the rollers contacts the web during their oscillation. Movement of the lever 11 from such position causes one or the other roller during its oscillation to contact alternate sections of the web and alter slightly the position of alternate perforation lines to effect equal spacing of the lines. The selection of the roller to be employed depends on whether the zig-zag pile formed by incorrectly aligned perforation or folding lines leans one way or the other. The two rollers 22, 23 may be on the same side of the web and carried by levers arranged so that one or other is operative. If the shaft 4 carries two perforating knives which are not exactly 180 degrees apart, the disc 12 is driven so that it makes one revolution for each revolution of the shaft 4 so that the roller 22 or 23 in use contacts alternate sections of the web to alter slightly the position of alternate perforated lines.
Patent GB-426515-A (GB)
Title: Improvements in or relating to spirit pyrophoric igniters
IPC: F23Q2/08
Filed: 1934-02-03
Abstract: 426,515. Frictional igniters. ASPREY, K. M. F., Ferndale, Gipsy Lane, Putney, and HAMPTON, D. B., 53, South Croxted Road, West Dulwich, both in London. Feb. 3, 1934, No. 3613. [Class 75 (iii)] The wick d is disposed horizontally and the wick cap p is secured by means of a spring wire frame q to a slidable carrier o pivoted at n to an arm m secured to a spring-actuated frictionwheel l freely mounted on a shaft k. Ignition is effected by moving a pivoted spring-controlled detent s so as to release the friction-wheel, and the igniter is re-set by pressing inwardly the carrier o. The wick cap is withdrawn substantially longitudinally from the wick, the friction-wheel being recessed to accommodate the cap when retracted. A plate u on the carrier o normally closes an aperture in a cover t. As shown, the igniter is embodied in a stand formed in the shape of an animal's hoof.
Patent GB-106255-A (GB)
Title: Improvements in Grinding or Abrading Wheels.
Inventor: WHITHAM FREDRIC EDWARD
IPC: B24D7/06
Filed: 1917-03-13
Abstract: 106,255. Whitham, F. E. March 13, 1917. Wheels.-Relates to grinding or abrading wheels constructed as described in Specification 20871/10. The blocks B of abrasive material are clamped, in pairs, in pockets formed on the wheel body by means of jaws C and screws D. When the jaws are released, the blocks may be moved endways to compensate for wear by means of racks N gearing with pinions T, each pair of which is turned by a pin inserted at W; the racks have projecting arms which bear upon the rear ends of the blocks.
Patent GB-342897-A (GB)
Title: Improvements in or relating to buckets or similar articles of hollow-ware
Filed: 1930-02-04
Abstract: 342,897. Buckets &c. CARTWRIGHT, F. E. (trading as RHODES & CARTWRIGHT), and CARTWRIGHT, F. K., Corngreaves Works, Overend Road, Cradley Heath, Staffordshire. Feb. 4, 1930, No. 3701. [Class 66.] A bucket or like article of hollow, inverted, frustro-conical shape is formed near the top with a bead or projection 9 to which the lower part of the rigid cylindrical flange 7 of the lid 4 is secured by solder. Between the bead and the wired upper edge 8 the bucket wall is spaced away from the lid flange, and the space thus formed may contain a cutting wire 24, Fig. 5. The lid flange has an incision or groove 16 formed in it to facilitate the removal of the lid, which may be effected by the aforementioned cutting wire or by a doubled-back portion 21, Fig. 2, of the lower portion of the flange, in co-operation with a key 18. If required the cutting wire 24 and the doubled-back portion 21 of the flange may both be provided so that both the wire and the portion of the flange below the groove 16 may be wound up by the key 18 leaving the lid with the top part of the flange free for removal from the bucket. An opening 6 may be formed in the lid which may be recessed as at 5 to receive a closure disc 14.
Patent GB-493546-A (GB)
Title: Improvements in or relating to the treatment of cotton cords or fabric
IPC: B29D30/40
Filed: 1937-02-08
Abstract: Cotton cords or fabrics are treated with a solution containing 1 molecular proportion of copper sulphate to 2 molecular proportions of caustic soda and 20-30 gms. of copper sulphate per litre, whereby their hot flexing life is increased.  The material is immersed for about 2 hrs. at room temperature, then in a second bath of slightly less concentration, and then in dilute acid baths.  In place of copper sulphate may be used the nitrate, chloride or carbonate. Specification 466,996 is referred to.
Patent GB-362234-A (GB)
Title: Improvements relating to girdles for wear
IPC: A41C1/00
Filed: 1931-02-05
Abstract: 362,234. Girdles for wear. FRANCIS, E. L., 88, Chancery Lane, London.- (Nature's Rival Co. ; 1700, Irving Park Boulevard, Chicago, U.S.A.) Feb. 5, 1931, No. 3732. [Class 141.] A girdle consists of two symmetrical front portions 10 and a rear portion 11, which are cut to the forms shown from a strip of elastic material. The edges are joined by outer and inner bindings reinforced by stays.
Patent GB-124023-A (GB)
Title: An Improved Motor Tractor for Ploughs.
Inventor: MORRIS RICHARD
IPC: A01B3/56
Filed: 1918-03-04
Abstract: 124,023. Morris, R. March 4, 1918. Non-reactive steering-mechanism.-In a motor tractor for ploughing &c. comprising a jointed main frame a mounted on two main wheels b and on two steering-wheels c, c<1> in line with one another, the two steering-wheels are operated simultaneously from the driver's platform by means of a steering-column c' connected by bevel gearing to a two-armed lever c<9> which is pivoted at c<4> and is linked by universal joints and reds to crank-levers c<2>, c<3> on the wheel supports.
Patent GB-1007651-A (GB)
Title: Improvements in or relating to magnetic layer devices
IPC: H03K17/84
Filed: 1963-01-30
Abstract: 1,007,651. Magnetic structures; magnetic storage devices. SIEMENS & HALSKE A.G. Jan. 30, 1963 Feb. 1, 1962], No. 3766/63. Headings H1H and H1T. [Also in Division H3] An attenuating layer of a material having a specific resistance of between 10<SP>-5</SP> and 2 x 10<SP>-1</SP> ohm centimetres is positioned close to a magnetic thin film storage element to prevent damped magnetization oscillations when the film is switched. In one arrangement, Fig. 4, in which a matrix of film 'elements 2 made of nickel-iron is deposited on a glass substrate 1 to a thickness of about 1000A, a graphite attenuation layer 5 is applied to the reverse face of the substrate. The thin film elements have an easy axis of magnetization and are overlaid by superimposed insulating layers 3 and sets of conductive strips 4 in the usual manner, only one set of conductive strips being shown. An alternative arrangement, Fig. 5, comprises an electrical conductor 4 and a concentric attenuating layer 5, ring-shaped thin magnetic storage layers 2 being directly applied to the attenuating layer. When magnetic films and attenuating layers are formed in direct contact, the magnetic material may be vapour-deposited permalloy and the attenuating layer opticallypolarized N-type phosphor-doped silicon. Other suitable attenuating materials are stated to be retort carbon, doped tin oxide and p-conductive boron-doped silicon. The use of a fluid attenuating layer of concentrated acetic or boric acid is mentioned.
Patent GB-470077-A (GB)
Title: Improvements in the manufacture and production of vinyl compounds
IPC: C07D209/86
Filed: 1936-02-07
Abstract: N-Vinyl compounds are manufactured by causing pyrrole or a compound containing the pyrrole ring in admixture with hydroxides or alcoholates of the alkali or alkaline-earth metals, or the alkali compounds of the pyrrole compounds if desired in admixture with hydroxides or alcoholates of the alkali or alkaline-earth metals, to act at elevated temperatures on vinyl halides or dihalogen derivatives of ethane, e.g. ethylene or ethylidene halides, in the presence of an inert diluent, e.g. an alcohol such as methyl, ethyl or butyl alcohol, a glycol such as ethylene or diethylene glycol, or a hydrocarbon such as cyclohexane, benzene, toluene, tetra- or decahydronaphthalene.  Suitable starting materials are pyrrole, indole, carbazole or naphthocarbazole, or compounds obtainable therefrom by the addition of hydrogen or the introduction of substituents, provided they still contain a free NH group.  The products may be purified by distillation, if desired under reduced pressure, by extraction or by crystallization.  In an example, equimolecular amounts of carbazole and potassium hydroxide are heated in methylnaphthalene and the resulting potassium carbazole is reacted with vinyl chloride at 180--190 DEG  C. under pressure in the presence of hexahydroxylene, yielding vinylcarbazole.  If the vinyl chloride be replaced by an ethylene or ethylidene halide, twice the amount of alkali is preferably employed in the preparation of the alkali carbazole.  Specification 192,376, [Class 2 (iii)], is referred to.
Patent GB-639549-A (GB)
Title: Automatic volume control systems
IPC: H03G3/20
Filed: 1947-02-10
Abstract: 639,549. Automatic gain control; radiolocation. STANDARD TELEPHONES & CABLES, Ltd. Feb. 10, 1947, No. 3836. Convention date, Feb. 9, 1946. [Classes 40 (v) and 40 (vii)] An automatic gain control voltage is obtained by integrating the output of a multivibrator with two stable states; control pulses are derived in pairs from the incoming signals, the first and second pulses of each pair being used respectively to operate and restore the multivibrator. When the output level falls below a predetermined value, the second pulse of a pair fails to restore the multivibrator, so that the control voltage builds up until the output level again reaches the limiting value, whereupon the multivibrator is restored by the second control pulse of a subsequent pair. Where the incoming signals are modulated sinusoidally the A.G.C. circuit comprises a clipper 4 fed from the detector and passing the positive half-. cycles of modulation, from which pairs of pulses corresponding to the leading and trailing edges are generated in a differentiator 7. Positive and negative-going pulses are separated in a clipper-separator 10 adjusted to pass only the tips of the pulses, the clipping level for negative being greater than that for positive-going pulses. The clipped pulses are applied respectively to trigger and restore a pair of cross-connected valves 15, 16, the negative-going pulses being first inverted in sign by means of a phasereverser 14; the A.G.C. line is coupled to the grid of the valve 16 over a low-pass filter 19. While pulses of both signs pass the separator 10 the cross-connected pair 15, 16 is successively tripped and restored by each pair of pulses, so that short positive-going rectangular pulses appear on the A.G.C. line, the time-constant of which is so adjusted that under such circumstances the line potential tends increasingly negative, due to the bias - C. When the receiver gain has become insufficient for negative-going pulses to pass the separator 10 the cross-connected pair remains tripped and charges the A.G.C. line steadily in a positive sense, until the gain is once more sufficient, whereupon the pair 15, 16 is restored by a subsequent negative-going impulse and the cycle re-commences. The A.G.C. line potential thus hunts about a mean value as determined by the clipping level for negative-going pulses. The arrangement is more particularly applicable to radar and pulse communication systems: in a radar system using triangular pulses in pairs, Fig. 5 (not shown), comprising a leading pulse of high initial amplitude and a trailing pulse terminating in high amplitude, the clipper 4 may be omitted, Fig. 3 (not shown). As modified for a pulse communication system, Fig. 2 (not shown), each valve. in the crossconnected pair receives triggering impulses via a separate gate-clipper, the two gate-clippers being alternately rendered conductive by means of a flip-flop circuit triggered by the incoming signals.